A stop valve body machining apparatus and method

Abstract

The application relates to the technical field of valve body machining and production, in particular to a stop valve body machining equipment and method, which comprises a workbench, a clamping assembly, a guiding assembly and a drilling assembly. The application realizes one-time efficient and accurate positioning through a mechanical linkage mechanism. The beneficial effect is that the positioning disc, the U-shaped guide rail, the positioning module and the connecting module in the guiding assembly are matched with each other, the drilling position and the hole interval can be determined according to the stop valve body specifications, meanwhile, the positioning module and the connecting module are matched with each other, the drilling rod is provided with guidance and support during rapid positioning adjustment, efficient adjustment of the hole position in the flange drilling process of one end of the stop valve body of different specifications is realized, and the stability during the drilling process of the drilling rod is improved.

Description

Technical Field

[0001] This invention relates to the field of valve body processing and manufacturing technology, specifically to a gate valve body processing equipment and method. Background Technology

[0002] The main steps in the valve body processing of a gate valve are as follows: First, a blank is prepared by casting or forging. Then, the reference surface is milled. Next, the main channel hole is drilled and the valve seat sealing surface is precision machined. Finally, the flange connection hole is drilled and tapped. Among these steps, the processing of the flange connection hole is particularly important, as it relates to the sealing and stability of the valve connection with the pipeline. If the hole position is deviated, it will lead to poor flange connection and cause serious problems such as medium leakage.

[0003] Currently, when positioning and machining flange holes in the valve body of a gate valve, fixed tooling is commonly used. However, the unevenness of the flange material (such as ductile iron or alloy steel) can cause elastic yielding during drill cutting. At the same time, the drill rod of the drilling rig is prone to high-speed vibration and displacement. Traditional positioning drilling methods cannot dynamically compensate for this deformation and high-speed vibration, resulting in poor hole diameter roundness and displacement of hole axis perpendicularity.

[0004] To address this, the present invention proposes a valve body processing equipment for a shut-off valve, which effectively ensures the stability of the drill rod during the drilling process and the roundness of the drilled hole diameter and the coaxiality between the multiple holes. Summary of the Invention

[0005] The purpose of this invention is to provide a valve body processing equipment and method for a shut-off valve, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a gate valve body processing equipment, comprising: a worktable, a clamping assembly, a guiding assembly, and a drilling assembly, wherein the clamping assembly and the drilling assembly are fixedly installed at both ends of the worktable surface, and a guiding assembly is provided between the clamping assembly and the drilling assembly, and the guiding assembly is fixedly installed on the worktable surface.

[0007] The guide assembly includes a support column, a positioning disc, a U-shaped guide rail, a connecting module, a fixed shaft, a positioning module, a shaft end sleeve, and a hole-removing module. The support column is installed in the middle of the worktable, and the positioning disc is fixedly mounted on the outer wall of the support column via an ear seat. The positioning disc is provided with a U-shaped guide rail perpendicular to the upper surface of the worktable. A connecting module that slides up and down is provided inside the U-shaped guide rail. A fixed shaft is fixedly installed directly below the U-shaped guide rail. The fixed shaft and the positioning disc are on the same axis. A side plate is fixedly installed at the front of the rod, and the side plate is fixedly installed on the side wall of the support column. A positioning module is rotatably installed on the outer wall of the fixed shaft, and a shaft end sleeve is installed at the end of the fixed shaft through a bearing. The end face of the shaft end sleeve has a guide groove that passes through its axis. A locking frame is fixedly installed at one end of the guide groove. A hole-removing module is also fixedly installed on the end face of the shaft end sleeve. The hole-removing module cooperates with the positioning module. One end of the connecting module is slidably installed inside the guide groove. The positioning disc has evenly distributed graduations.

[0008] The drilling assembly consists of a drilling machine and a lifting platform fixedly connected to the worktable.

[0009] Preferably, the connecting module includes a slider, a T-shaped rod, and a telescopic rod; the slider is slidably disposed inside the U-shaped guide rail; the T-shaped rod consists of a handle and a head, the handle is slidably disposed in the guide groove and passes through a locking frame at one end of the guide groove, the locking frame is provided with a screw that cooperates with the outer wall of the handle through a "U"-shaped frame, and telescopic rods are symmetrically disposed at both ends of the head, one of the telescopic rods is hinged to the slider, and the other telescopic rod is hinged to the positioning module.

[0010] Preferably, the positioning module includes a swing rod, a limiting sleeve, a limiting slide sleeve, a guide rod, a limiting ring, a positioning post, and a rectangular limiting block; one end of the swing rod is engaged between the fixed shaft and the side plate, and is rotatably mounted on the outer circumference of the fixed shaft via a bearing; the other end of the swing rod is fixedly provided with a limiting sleeve, which has a limiting through hole along its length; the outer wall of the swing rod is also provided with bolts that mate with the outer wall of the positioning disc via an L-shaped seat; a rectangular through hole is provided on the swing rod.

[0011] Preferably, a limiting sleeve is slidably disposed inside the rectangular through hole, a guide rod is slidably disposed on the limiting sleeve, a limiting ring is fixedly disposed on the outer wall of a section of the guide rod facing the clamping assembly, a spring is sleeved on the outer wall of the guide rod located between the limiting ring and the swing rod; the spring is in a compressed state; a positioning post is fixedly disposed on the end of the guide rod facing the clamping assembly; a rectangular limiting block is fixedly disposed on the end of the guide rod away from the clamping assembly.

[0012] Preferably, the rectangular limiting block has a strip-shaped through hole inside; the inner wall of the strip-shaped through hole is symmetrically provided with snap-fit ​​parts by means of a spring sliding engagement; the snap-fit ​​parts have a V-shaped structure.

[0013] Preferably, the swing arm has a visible groove for reading the scale.

[0014] Preferably, the hole-removing module includes an auxiliary shaft, a sleeve, a locking rod, a connecting plate, a support, and a guide sleeve; the auxiliary shaft is fixedly installed at the center position of the shaft end sleeve; the sleeve is rotatably sleeved on the outer wall of the auxiliary shaft.

[0015] Preferably, the outer wall of the sleeve is provided with a locking rod, and a connecting plate parallel to the locking rod is also fixedly provided on the sleeve; a support is provided on the connecting plate; the other end of the locking rod passes through the strip-shaped through hole, the support and the limiting through hole in sequence and is bolted with a nut.

[0016] Preferably, the outer wall of the end where the connecting plate connects to the sleeve is further provided with a guide sleeve that slides in cooperation with the drilling assembly.

[0017] Furthermore, the present invention also provides a method for processing a gate valve body, which is completed using the aforementioned gate valve body processing equipment. The specific processing method is as follows:

[0018] S1: The valve body of the shut-off valve is clamped and fixed by the clamping assembly, and the drilling position on the flange surface of the valve body is determined. At the same time, the drilling assembly is driven to drill a hole on the flange surface to open a reference hole.

[0019] S2: Adjust the angle between the positioning module and the U-shaped guide rail according to the requirements to initially determine the spacing between holes during the drilling process.

[0020] S3: By moving the T-shaped rod in the connecting module, the sliders and limiting sleeves at both ends of the T-shaped rod slide on the U-shaped slide rail and the rectangular through hole respectively, so that the slider is aligned with the reference hole. At this time, the position of the slider is determined, and the limiting sleeve is adjusted synchronously with the slider. After the position of the slider is determined, the position of the limiting sleeve is also determined, thereby determining the spacing between the drill holes and the hole position.

[0021] S4: Drive the clamp assembly to rotate, so that one end of the guide rod in its limiting sleeve is locked in the reference hole, thereby achieving one-time positioning of the drilling position and the distance between holes.

[0022] S5: Finally, drive the drilling assembly to drill holes on the flange surface of the shut-off valve body, and repeat S4 until drilling is complete.

[0023] Compared with the prior art, the valve body processing equipment for shut-off valves provided in this embodiment of the invention has the following beneficial effects:

[0024] This invention aims to optimize the drilling process on the flange surface at one end of the valve body during the processing of a gate valve. By using a positioning disc, a U-shaped guide rail, a connecting module, and a positioning module in cooperation, the drilling position and hole spacing are adjusted according to the specifications of the gate valve to be processed. During the adjustment process, the positioning module and the connecting module work together to ensure that the holes are always on the same circumference and the distance between the holes remains consistent. At the same time, a support structure is used to provide secondary support for the drill rod, achieving efficient positioning and stable drilling in one go according to the specifications of the gate valve.

[0025] This invention uses a connecting module to limit the position of the drill rod, and also provides a second support point for the drill rod in addition to the drilling machine, thereby improving the stability during the drilling process and ensuring that the drilling position is accurate and does not deviate.

[0026] This invention employs a synchronous adjustment design for the positioning module and the connecting module. By adjusting the angular position of the positioning module on the positioning disk, the angle between the positioning module and the drill rod is adjusted, thereby initially determining the drilling spacing and position. Furthermore, the T-shaped rod in the connecting structure enables synchronous adjustment of the limiting sleeve in the positioning module and the slider in the connecting structure, thus achieving a secondary determination of the drilling spacing and position, thereby ensuring the accuracy of the drilling position. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0028] Figure 2 This is a three-dimensional structural diagram of the guide component of the present invention in its front view position.

[0029] Figure 3 This is a three-dimensional structural diagram of the guide component of the present invention in its rear view position.

[0030] Figure 4 This is a cross-sectional schematic diagram of the connection between the positioning disk, the positioning module, and the shaft end sleeve of the present invention.

[0031] Figure 5 This is a schematic diagram of the overall structure of the positioning disk and support column of the present invention.

[0032] Figure 6 This is a schematic diagram of the hole-removing module and the T-shaped rod installation structure of the present invention.

[0033] Figure 7 This is a schematic diagram of the connection module structure of the present invention.

[0034] Figure 8 This is a schematic diagram of the positioning module structure of the present invention.

[0035] Figure 9 This is a schematic cross-sectional view of the rectangular limiting block of the present invention.

[0036] In the diagram: 1. Workbench; 2. Clamping assembly; 3. Guide assembly; 31. Support column; 32. Positioning disc; 33. U-shaped guide rail; 34. Connecting module; 341. Slider; 342. T-shaped rod; 343. Telescopic rod; 35. Fixed shaft; 351. Side plate; 36. Positioning module; 361. Swing rod; 3611. Rectangular through hole; 3612. Visible slot; 362. Limiting sleeve; 3621. Limiting through hole; 363. Limiting slide. 364. Guide rod; 365. Limiting ring; 366. Positioning post; 367. Rectangular limiting block; 3671. Strip through hole; 3672. Snap-fit ​​part; 37. Shaft end sleeve; 371. Guide groove; 372. Locking bracket; 38. Hole release module; 381. Auxiliary shaft; 382. Sleeve; 383. Locking rod; 384. Connecting plate; 385. Support; 386. Guide sleeve; 4. Drilling assembly; 41. Drilling machine; 42. Lifting platform. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Please see Figures 1-5 A gate valve body processing equipment includes: a worktable 1, a clamping assembly 2, a guide assembly 3, and a drilling assembly 4. The clamping assembly 2 and the drilling assembly 4 are fixedly installed at both ends of the surface of the worktable 1. The guide assembly 3 is provided between the clamping assembly 2 and the drilling assembly 4. The guide assembly 3 is fixedly installed on the surface of the worktable 1.

[0039] During operation, the valve body to be processed is clamped and fixed by the clamping component 2, and then the drilling component 4 and the guide component 3 are used to drill holes in the valve body. After a hole is processed, the valve body is moved by the clamping component 2. After completion, the guide component 3 uses the previous hole as a reference to limit the valve body. The drilling component 4 is used to continue drilling, and the above steps are repeated until all drilling is completed.

[0040] The guide assembly 3 includes a support column 31, a positioning disc 32, a U-shaped guide rail 33, a connecting module 34, a fixed shaft 35, a positioning module 36, a shaft end sleeve 37, and a hole-removing module 38. The support column 31 is fixedly installed in the middle of the worktable 1. The positioning disc 32 is fixedly installed on the outer wall of the support column 31 via an ear seat. The support column 31 provides a stable foundation for the guide assembly 3. A U-shaped guide rail 33, perpendicular to the upper surface of the worktable 1, is provided on the positioning disc 32. A connecting module 34, which slides vertically, is installed inside the U-shaped guide rail 33. The U-shaped guide rail 33 connects to the connecting module 35. The movement of 4 is limited, and a fixed shaft 35 is fixedly installed directly below the U-shaped guide rail 33. The fixed shaft 35 and the positioning disk 32 are on the same axis. A side plate 351 is fixedly installed in front of the fixed shaft 35. The side plate 351 is fixedly installed on the side wall of the support column 31. A positioning module 36 is rotatably installed on the outer wall of the fixed shaft 35. The fixed shaft 35 makes the positioning module 36 always rotate around the center of the positioning disk 32. Furthermore, the positioning disk 32 is evenly marked with scales to facilitate the positioning of the positioning module 36 by means of the scales on the positioning disk 32.

[0041] Meanwhile, a shaft end sleeve 37 is also installed at the end of the fixed shaft 35 via a bearing, and a guide groove 371 penetrating its axial center is opened on the end face of the shaft end sleeve 37. A locking frame 372 is fixedly installed at one end of the guide groove 371, and a hole-removing module 38 is also fixedly installed on the end face of the shaft end sleeve 37. The hole-removing module 38 cooperates with the positioning module 36. One end of the connecting module 34 is slidably disposed inside the guide groove 371. The connecting module 34 can be positioned by the cooperation of the guide groove 371 and the locking frame 372, so as to avoid the positioning module 36 and the connecting module 34 from shifting in position during operation, which would affect the accuracy of the overall drilling position.

[0042] It should be noted that the clamping component 2 and the drilling component 4 mentioned above are both existing technologies. The drilling component 4 consists of a drilling machine 41 and a lifting platform 42 fixedly connected to the worktable 1. The overall height of the drilling component 4 is adjusted by the lifting platform 41 to facilitate the drilling component 4 to cooperate with the guide component 3 for drilling. The axis of the positioning disc 32 and the axis of the clamping component 2 are always on the same straight line.

[0043] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 7The connecting module 34 includes a slider 341, a T-shaped rod 342, and a telescopic rod 343. The slider 341 is slidably disposed inside the U-shaped guide rail 33, and the drill rod in the drilling machine 41 will pass through the slider 341 during the drilling process. The slider 341 as a whole plays a guiding and supporting role for the drill rod, making the drilling process more stable.

[0044] Furthermore, the aforementioned T-shaped rod 342 consists of a handle and a head. The handle is slidably disposed within the guide groove 371 and passes through a locking frame 372 at one end of the guide groove 371. The locking frame 372 is provided with a screw that cooperates with the outer wall of the handle through a U-shaped frame. When the positions of the connecting module 34 and the positioning module 36 are determined, the connecting module 34 is locked by rotating the screw in the locking frame 372, thereby fixing the overall position.

[0045] It should be noted that telescopic rods 343 are symmetrically arranged at both ends of the T-shaped rod 342. One telescopic rod 343 is hinged to the slider 341, and the other telescopic rod 343 is hinged to the positioning module 36. In specific use, different models of telescopic rods 343 can be selected and installed according to the angle adjustment range, thereby adjusting the adjustment range of the positioning module 36 on the positioning disc 32, so that the overall positioning is flexible and applicable to the processing of valve bodies of various specifications.

[0046] Please see Figure 1 — Figure 5 and Figure 8 The positioning module 36 includes a swing rod 361, a limiting sleeve 362, a limiting sliding sleeve 363, a guide rod 364, a limiting ring 365, a positioning post 366, and a rectangular limiting block 367. One end of the swing rod 361 is engaged between the fixed shaft 35 and the side plate 351, and is rotatably mounted on the outer circumference of the fixed shaft 35 via a bearing. The other end of the swing rod 361 is also provided with a bolt that mates with the outer wall of the positioning disk 32 via an L-shaped seat. When the positioning module 36 is positioned on the positioning disk 32, the swing rod 361 can be fixed in the current position by rotating the bolt that mates with the outer wall of the positioning disk 32, thereby positioning the positioning module 36.

[0047] Furthermore, a limiting sleeve 362 is provided on the outer wall of the swing rod 361 at the end away from the axis of the positioning disk 32. The limiting sleeve 362 is provided with a limiting through hole 3621 opened along its length direction. A rectangular through hole 3611 is opened on the swing rod 361, and a visual groove 3612 for reading the scale is opened on the surface of the swing rod 361 near the edge of the positioning disk 32. The position of the positioning module 36 on the positioning disk 32 can be clearly known through the visual groove 3612, which facilitates the overall positioning.

[0048] Meanwhile, a limiting sleeve 363 is slidably provided inside the rectangular through hole 3611, and a guide rod 364 is slidably provided on the limiting sleeve 363. A limiting ring 365 is fixedly provided on the outer wall of a section of the guide rod 364 facing the clamping assembly 2. A spring is sleeved on the outer wall of the guide rod 364 between the limiting ring 365 and the swing rod 361, and the spring is always in a compressed state. When the guide rod 364 is pressed against the flange surface, the guide rod 364 always has a pressure against the flange surface. A positioning post 366 is fixedly provided at the end of the guide rod 364 facing the clamping assembly 2. Under the action of the pressure, the positioning post 366 can be quickly inserted into the drill hole that needs to be positioned, thereby ensuring timely and accurate positioning.

[0049] It should be noted that the hole spacing on the valve body flange surface to be drilled is determined by the positioning module 36, mainly by referring to the scale on the positioning disc 32. The overall position of the positioning module 36 is determined by the visible groove 3612 at one end of the swing rod 361, and it is fixed by the bolt that mates with the positioning disc 32 at one end. This initially determines the drilling position. Then, by moving the T-shaped rod 342, the T-shaped rod 342 moves along the direction of the guide groove 371, thereby determining the position of the limiting sleeves 363 and the slider 341 at both ends of the T-shaped rod 342. At this time, the T-shaped rod 342 is fixed by the locking bracket 372. In this way, the drilling position and hole spacing on the valve body flange surface to be drilled are determined by two positioning adjustments. This achieves efficient one-time positioning, so that the drilling position and hole spacing can always be determined by only one positioning adjustment during the processing of valve bodies of different specifications.

[0050] Please see Figure 8 and Figure 9 A rectangular limiting block 367 is fixedly provided at the end of the guide rod 364 away from the clamping assembly 2. A strip-shaped through hole 3671 is provided inside the rectangular limiting block 367. A snap-fit ​​member 3672 is symmetrically provided on the inner wall of the strip-shaped through hole 3671 through a spring in a sliding fit. The snap-fit ​​member 3672 has an overall V-shaped structure. When a component passes through the snap-fit ​​member 3672, when the force of the component reaches a certain range, the snap-fit ​​member 3672 will retract into the rectangular limiting block 367, thereby allowing the component to pass through.

[0051] Please see Figures 1-6The hole-removing module 38 includes an auxiliary shaft 381, a sleeve 382, ​​a locking rod 383, a connecting plate 384, a support 385, and a guide sleeve 386. The auxiliary shaft 381 is fixedly installed at the center of the shaft end sleeve 37, and the sleeve 382 is rotatably sleeved on the outer wall of the auxiliary shaft 381. The locking rod 383 is located on the outer wall of the sleeve 382. The connecting plate 384, which is parallel to the locking rod 383, is also fixedly installed on the sleeve 382. The support 385 is located on the connecting plate 384. The other end of the locking rod 383 passes through the strip-shaped through hole 3671, the support 385, and the limiting through hole 3621 in sequence and is bolted with a nut. The outer wall of the end of the connecting plate 384 connected to the sleeve 382 is also provided with a guide sleeve 386 that slides with the drilling assembly 4, so that the hole-removing module 38 can cooperate with the drilling assembly 4.

[0052] It should be noted that after drilling is completed, the drill rod needs to be disengaged from the drill hole. At this time, due to the cooperation between the guide sleeve 386 and the drilling assembly 4, the hole-removing module 38 will also move along with the drilling assembly 4. At the same time, the locking rod 383 in the hole-removing module 38 passes through the strip-shaped through hole 3671 in the rectangular limiting block 367, and the strip-shaped through hole 3671 is equipped with a locking member 3672. Under the action of the locking member 3672, when the hole-removing module 38 moves, the locking member 3672 will cause the guide rod 36... 4. The movement is synchronized, so that the positioning pin 366 at one end of the guide rod 364 is disengaged from the drill hole, and the positioning pin 366 is always disengaged from the drill hole synchronously with the drill rod. At this time, the drive clamp assembly 2 rotates the valve body. During the rotation, the positioning pin 366 is always pressed against the surface of the valve body flange under the action of the spring sleeved on the guide rod 364. It should be noted that the positioning pin 366 is made of rubber and will not scratch or damage the surface of the valve body flange. When rotating to the next drill hole, the positioning pin 366 will quickly lock into the drill hole and be positioned again.

[0053] Please see Figures 1 to 9In summary, the gate valve body processing equipment mainly uses a clamping assembly 2 to clamp and fix the gate valve body. Then, according to the gate valve specifications, a reference hole is pre-drilled on the flange surface of the gate valve body using a drilling assembly 4. Next, the positioning module 36 and the connecting module 34 are adjusted, and the clamping assembly 2 is driven to rotate the valve body, locking the positioning pin 366 in the positioning module 36 into the reference hole, thereby determining the position and hole spacing of the hole to be drilled. The drilling assembly 4 is driven to drill the flange surface of the valve body, and the drill rod passes through the slider 341 in the connecting module 34, thereby providing guidance and support for the drill rod and making the overall drilling process more stable. After drilling is completed, the drill rod is retracted to release the hole. Under the action of the guide sleeve 386, the hole-removing module 38 and the drilling assembly 4 cooperate to continuously complete the hole removal and positioning of the positioning pin 366, thereby achieving one-time efficient and stable positioning suitable for valve bodies of different specifications.

[0054] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0055] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0056] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0057] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A valve body processing equipment for a gate valve, comprising: A worktable, a clamping assembly, a guiding assembly, and a drilling assembly, characterized in that: a clamping assembly and a drilling assembly are fixedly installed at the front and rear of the upper end of the worktable, and a guiding assembly is also provided on the surface of the worktable between the clamping assembly and the drilling assembly; The guiding assembly includes a support column installed in the middle of the worktable. A positioning disc is fixedly installed on the outer wall of the support column via an ear seat. A U-shaped guide rail perpendicular to the upper surface of the worktable is provided on the positioning disc. A connecting module that slides up and down is provided inside the U-shaped guide rail. A fixed shaft is fixedly installed directly below the U-shaped guide rail. The fixed shaft and the positioning disc are on the same axis. A side plate is fixedly installed in front of the fixed shaft. The side plate is fixedly installed on the side wall of the support column. A positioning module is rotatably installed on the outer wall of the fixed shaft. A shaft end sleeve is also installed at the end of the fixed shaft via a bearing. A guide groove penetrating the axis is opened on the end face of the shaft end sleeve. A locking frame is fixedly installed at one end of the guide groove. A hole-removing module is also fixedly installed on the end face of the shaft end sleeve. The hole-removing module cooperates with the positioning module. One end of the connecting module is slidably installed inside the guide groove. The drilling assembly consists of a drilling machine and a lifting platform fixedly connected to the worktable. The connecting module includes a slider, a T-shaped rod, and a telescopic rod; the slider is slidably disposed inside the U-shaped guide rail; the T-shaped rod consists of a handle and a head, the handle is slidably disposed in the guide groove and passes through a locking frame at one end of the guide groove, the locking frame is provided with a screw that cooperates with the outer wall of the handle through a "U"-shaped frame, and telescopic rods are symmetrically disposed at both ends of the head, one of the telescopic rods is hinged to the slider, and the other telescopic rod is hinged to the positioning module; The positioning module includes a swing rod, a limiting sleeve, a limiting slide sleeve, a guide rod, a limiting ring, a positioning post, and a rectangular limiting block. One end of the swing rod is engaged between the fixed shaft and the side plate, and is rotatably mounted on the outer circumference of the fixed shaft via a bearing. The other end of the swing rod is fixedly provided with a limiting sleeve, which has a limiting through hole along its length. The outer wall of the swing rod is also provided with bolts that mate with the outer wall of the positioning disc via an L-shaped seat. A rectangular through hole is provided on the swing rod. A limiting sleeve is slidably installed inside the rectangular through hole. A guide rod is slidably installed on the limiting sleeve. A limiting ring is fixedly installed on the outer wall of a section of the guide rod facing the clamping assembly. A spring is sleeved on the outer wall of the guide rod between the limiting ring and the swing rod. The spring is in a compressed state. A positioning post is fixedly installed at the end of the guide rod facing the clamping assembly. A rectangular limiting block is fixedly installed at the end of the guide rod away from the clamping assembly.

2. The valve body processing equipment for a shut-off valve according to claim 1, characterized in that: The rectangular limiting block has a strip-shaped through hole inside; the inner wall of the strip-shaped through hole is symmetrically provided with snap-fit ​​parts by means of a spring sliding fit; the snap-fit ​​parts have a V-shaped structure.

3. The valve body processing equipment for a shut-off valve according to claim 1, characterized in that: The positioning disc is evenly marked with graduations; the swing rod is provided with a visible slot for reading the graduations.

4. The valve body processing equipment for a shut-off valve according to claim 1, characterized in that: The hole-removing module includes an auxiliary shaft, a sleeve, a clamping rod, a connecting plate, a support, and a guide sleeve; the auxiliary shaft is fixedly installed at the center of the shaft end sleeve; the sleeve is rotatably fitted on the outer wall of the auxiliary shaft.

5. The valve body processing equipment for a shut-off valve according to claim 4, characterized in that: The outer wall of the sleeve is provided with a locking rod, and a connecting plate parallel to the locking rod is also fixedly provided on the sleeve; a support is provided on the connecting plate; the other end of the locking rod passes through the strip-shaped through hole, the support and the limiting through hole in sequence and is bolted with a nut.

6. The valve body processing equipment for a shut-off valve according to claim 4, characterized in that: The outer wall of the end where the connecting plate connects to the sleeve is also provided with a guide sleeve that slides in cooperation with the drilling assembly.

7. A method for processing a stop valve body, characterized in that, The valve body is processed using the valve body processing equipment described in claim 1, and the processing method is as follows. Includes the following steps: S1: The valve body of the shut-off valve is clamped and fixed by the clamping assembly, and the drilling position on the flange surface of the valve body is determined. At the same time, the drilling assembly is driven to drill a hole on the flange surface to open a reference hole. S2: Adjust the angle between the positioning module and the U-shaped guide rail according to the requirements to initially determine the spacing between holes during the drilling process; S3: By moving the T-shaped rod in the connecting module, the sliders and limiting sleeves at both ends of the T-shaped rod slide on the U-shaped guide rail and the rectangular through hole respectively, so that the slider is aligned with the reference hole. At this time, the position of the slider is determined, and the limiting sleeve is adjusted synchronously with the slider. After the position of the slider is determined, the position of the limiting sleeve is also determined, thereby determining the spacing between the drill holes and the hole position. S4: Drive the clamping assembly to rotate, so that one end of the guide rod in its limiting sleeve is locked in the reference hole, thereby achieving one-time positioning of the drilling position and the distance between holes; S5: Finally, drive the drilling assembly to drill holes on the flange surface of the shut-off valve body. Repeat S4 until all holes at all opening positions are machined.

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